From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13FC3CDB474 for ; Mon, 23 Oct 2023 11:28:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233994AbjJWL2r (ORCPT ); Mon, 23 Oct 2023 07:28:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233993AbjJWL2q (ORCPT ); Mon, 23 Oct 2023 07:28:46 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7396AA4 for ; Mon, 23 Oct 2023 04:28:43 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACA15C433C8; Mon, 23 Oct 2023 11:28:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698060523; bh=s8uOf2P0sSgCtR+UaOdVxNeR/YOakIZ25/q5DLTSIKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BEdtGyndOeETg8NA6g88bmvTqg+12BsgQkCM/JP/jSNyP4dDvOQAC5AsOe6hOW4LY VIbFY8uULkjV393MzxBOlOMFXNniH4bcm3dYvqivBRxjsSxHjOErg8VILRplCvYf7E wHEPcVJuoDrblSpdHa6tpFvSi0AjLI5dUupFMy1Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, James John , Hans de Goede Subject: [PATCH 6.1 174/196] platform/x86: asus-wmi: Change ASUS_WMI_BRN_DOWN code from 0x20 to 0x2e Date: Mon, 23 Oct 2023 12:57:19 +0200 Message-ID: <20231023104833.333810234@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104828.488041585@linuxfoundation.org> References: <20231023104828.488041585@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans de Goede commit f37cc2fc277b371fc491890afb7d8a26e36bb3a1 upstream. Older Asus laptops change the backlight level themselves and then send WMI events with different codes for different backlight levels. The asus-wmi.c code maps the entire range of codes reported on brightness down keypresses to an internal ASUS_WMI_BRN_DOWN code: define NOTIFY_BRNUP_MIN 0x11 define NOTIFY_BRNUP_MAX 0x1f define NOTIFY_BRNDOWN_MIN 0x20 define NOTIFY_BRNDOWN_MAX 0x2e if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) code = ASUS_WMI_BRN_UP; else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) code = ASUS_WMI_BRN_DOWN; Before this commit all the NOTIFY_BRNDOWN_MIN - NOTIFY_BRNDOWN_MAX aka 0x20 - 0x2e events were mapped to 0x20. This mapping is causing issues on new laptop models which actually send 0x2b events for printscreen presses and 0x2c events for capslock presses, which get translated into spurious brightness-down presses. The plan is disable the 0x11-0x2e special mapping on laptops where asus-wmi does not register a backlight-device to avoid the spurious brightness-down keypresses. New laptops always send 0x2e for brightness-down presses, change the special internal ASUS_WMI_BRN_DOWN value from 0x20 to 0x2e to match this in preparation for fixing the spurious brightness-down presses. This change does not have any functional impact since all of 0x20 - 0x2e is mapped to ASUS_WMI_BRN_DOWN first and only then checked against the keymap code and the new 0x2e value is still in the 0x20 - 0x2e range. Reported-by: James John Closes: https://lore.kernel.org/platform-driver-x86/a2c441fe-457e-44cf-a146-0ecd86b037cf@donjajo.com/ Closes: https://bbs.archlinux.org/viewtopic.php?pid=2123716 Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20231017090725.38163-2-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/asus-wmi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/platform/x86/asus-wmi.h +++ b/drivers/platform/x86/asus-wmi.h @@ -18,7 +18,7 @@ #include #define ASUS_WMI_KEY_IGNORE (-1) -#define ASUS_WMI_BRN_DOWN 0x20 +#define ASUS_WMI_BRN_DOWN 0x2e #define ASUS_WMI_BRN_UP 0x2f struct module;